Wrench



unire sraras rarnnr onirica.

ELISHA P.*NEVTON,'OF GREEN ISLAND, NEW YORK.

WRENCH.

Specification of Letters Patent No. 14,249, dated February 12, 1856.

To all 'whom t may concern Be it known that I, ELISHA P. NEWTON, of Green Island, in the county of Albany and State of New York, have made certain new and useful Improvements in Constructing Slide or Adjustable Wrenches; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specication, in which- Figure l is a longitudinal sectional View, and Fig. 2 a cross section of the same.

The saine letters have reference to like parts in each of the figures.

The nature or principle of my invent-ion consists in combining or arranging with the adjustable or sliding jaw of the wrench a concave semi threaded shank, a convex toothed eccentric catch or stop, the part-s being arranged, so that when the semi threads of the shank and eccentric are engaged the sliding jaw is held fast for use, and when the threads are disengaged, the

ljaw can slide rapidly either way until set in proper position and is then held fast by means of the eccentric.

The construction is as follows, viz: A is the stationary jaw; B, the shank; C, a concave or semi cylindrical recess formed in one side of the shank. This recess is finished with threads.

D is the sliding j aw, being secured to t-he shank by straps (a) and (ZJ) passing around the same.

E is a semi threaded eccentric arranged and operating with and within a recess in the strap (b).

(c) is a thumb piece by means of which, the eccentric with its threads are thrown in and out of gear with those of the shanks, when it is desired to move, or hold the slid ing jaw.

Having fully described by improved adjustable wrench, I wish to be understood as not claiming the toothed shank; but

l/Vhat I consider to be new and desire to claim by Letters Patent is:

The arrangement of a semi-screw-thread cut, or counter sunk, in the shank, and the semi screw-threaded stop or catch, for working therein, by which means finer threads may be used, and the movable jaw be brought closer up to the nut, and the stop or catch removed out of the way of the action of the wrench, they being arranged and operating in the manner as herein described and shown.

E. P. NEWTON.

Vitnesses:

A. A. LEE, J. J. SAVAGE. 

